Issue tagging is unfortunately a bit inconsistent, but a good starting point is to contribute to the modules repo. If you don't have a specific tool that you want to add/update, you can look at the list of open issues (check that nobody is assigned first) or help @Louis Le Nézet with topic migrations. Alternatively, if you're interested in a specific analysis type, you can find a related pipeline and reach out to its maintainers, although this might be a bit more challenging.